It's simply a relation of economies of scale with focus on the value-oriented sell.
这其实就是规模经济与以价值为导向的销售之间的关系。
The relation of scale conversion is gotten by use of the mass conservation equation.
同时，引入质量守恒方程，得出弹体的比例尺度换算关系。
The relation of scale conversion is gotten by use of the mass conservation equation.
同时，引入质量守恒方程，得出弹体的比例尺度换算关系。
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